摘 要
PLC（可編程控制器）作為一種工業(yè)控制微型計算機，它以其編程方便、操作簡單尤其是它的高可靠性等優(yōu)點，在工業(yè)生產(chǎn)過程中得到了廣泛的應(yīng)用。它應(yīng)用大規(guī)模集成電路，微型機技術(shù)和通訊技術(shù)的發(fā)展成果，逐步形成了具有多種優(yōu)點和微型，中型，大型，超大型等各種規(guī)格的系列產(chǎn)品，應(yīng)用于從繼電器控制系統(tǒng)到監(jiān)控計算機之間的許多控制領(lǐng)域。
隨著社會的不斷發(fā)展，樓房越來越高，而電梯成為了高層樓房的必須設(shè)備。電梯從手柄開關(guān)操縱電梯、按鈕控制電梯發(fā)展到了現(xiàn)在的群控電梯，為高層運輸做出了不可磨滅的貢獻。
PLC在電梯控制上的應(yīng)用主要體現(xiàn)在它的邏輯開關(guān)控制功能。由于PLC具有邏輯運算，計數(shù)和定時以及數(shù)據(jù)輸入輸出的功能。在電梯控制過程中，各種邏輯開關(guān)控制與PLC很好的結(jié)合，很好的實現(xiàn)了對電梯的控制。
本文主要討論研究利用三菱公司的可編程控制器對五層電梯的控制，形成電梯控制系統(tǒng)。
關(guān)鍵詞：五層；電梯；PLC；


ABSTRACT
PLC (Programmable Logical Controller) took one kind most important, the application situation most industries control microcomputer, it is convenient, operation simple in particular by its programming merit and so on redundant reliability, obtained the widespread application in the industrial production process. It applies the large scale integrated circuit, the miniature machine technology and the communication technology development achievement, gradually formed had the many kinds of merits and miniature, medium, large-scale, ultra large-scale and so on each kind of specification series product, applied to monitors between the computer from the control system many controls domain.
Along with society's unceasing development, the building is more and more high, but the elevator became the high level building to have the equipment. After humanity's more than centuries unremitting endeavors, the elevator already from the handle switch operation elevator, the push-button control elevator develops to the present group control elevator, has made the indelible contribution for the high level transportation.
PLC in the control in the elevator the application mainly to manifest in its logical switch control function. This function enable PLC to have the logic operation, counts with fixed time as well as the data feeds output function. Rises and falls in the process in the elevator, each logical switch control and PLC very good union, very good realization to fluctuation control.
This article main discussion studies using SANLING Corporation's PLC molding machine carries on the control to the 5-floor elevator fluctuation, forms the elevator control system
Key words: 5-floor , elevator; PLC;


目 錄
前 言 5
第一章 PLC的概述 7
1．1 PLC的產(chǎn)生和發(fā)展 7
1.2 什么是PLC ? 8
1.3 PLC的結(jié)構(gòu) 8
1.4 PLC的特點 9
1.5 PLC的發(fā)展趨勢 9
第二章 控制方案的選擇 10
2.1、繼電器控制 10
2.2、單片機控制 10
2.3、PLC控制 10
第 三 章 PLC控制電梯硬件電路的設(shè)計 12
3.1 主電路 12
3.2 電氣元件 13
3.3 門機電路、抱閘電路、門鎖及安全運行電路 14
3.4 PLC的選型及輸入、輸入端口安排 15
3.5 PLC 的 I/O 接口配置 17
第 四 章 PLC控制電梯梯形圖的設(shè)計 18
第五章 系統(tǒng)干擾來源及處理方法 28
5.1 PLC系統(tǒng)中干擾的主要來源及途徑 28
5.2 主要抗干擾措施 30
總 結(jié) 31
致 謝 31
參考文獻 33